162151661 has 8 divisors (see below), whose sum is σ = 196217280. Its totient is φ = 130811328.

The previous prime is 162151657. The next prime is 162151663. The reversal of 162151661 is 166151261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 162151661 - 2² = 162151657 is a prime.

It is a super-2 number, since 2×162151661² = 52586322330117842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162151663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681191 + ... + 681428.

It is an arithmetic number, because the mean of its divisors is an integer number (24527160).

Almost surely, 2^162151661 is an apocalyptic number.

It is an amenable number.

162151661 is a deficient number, since it is larger than the sum of its proper divisors (34065619).

162151661 is a wasteful number, since it uses less digits than its factorization.

162151661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362643.

The product of its digits is 2160, while the sum is 29.

The square root of 162151661 is about 12733.8784743691. The cubic root of 162151661 is about 545.3062398074.

The spelling of 162151661 in words is "one hundred sixty-two million, one hundred fifty-one thousand, six hundred sixty-one".